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CVE-2021-39620

In ipcSetDataReference of Parcel.cpp, there is a possible way to corrupt memory due to a use...

7.8 HighFix available

In ipcSetDataReference of Parcel.cpp, there is a possible way to corrupt memory due to a use after free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11 Android-12Android ID: A-203847542

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
Low
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

0.12%Unchanged since Jan 15, 2022
90%50%10%1%

What each source reports

NVD Score used 7.8

In ipcSetDataReference of Parcel.cpp, there is a possible way to corrupt memory due to a use after free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11 Android-12Android ID: A-203847542

Record
CVE-2021-39620
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0
7.2 HighAV:L/AC:L/Au:N/C:C/I:C/A:C
Weakness
CWE-416
Updated
2026-11-02
CVE List No score

In ipcSetDataReference of Parcel.cpp, there is a possible way to corrupt memory due to a use after free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11 Android-12Android ID: A-203847542

Record
CVE-2021-39620
Updated
2026-11-02
EUVDEUVD-2021-25977 No score

In ipcSetDataReference of Parcel.cpp, there is a possible way to corrupt memory due to a use after free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11 Android-12Android ID: A-203847542

Record
EUVD-2021-25977
Updated
2026-11-03
GitHub AdvisoriesGHSA-cg39-r375-5f83 No score

In ipcSetDataReference of Parcel.cpp, there is a possible way to corrupt memory due to a use...

In ipcSetDataReference of Parcel.cpp, there is a possible way to corrupt memory due to a use after free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11 Android-12Android ID: A-203847542

Record
GHSA-cg39-r375-5f83
Weakness
CWE-416
Updated
2026-11-02
OSVASB-A-203847542 No score

In ipcSetDataReference of Parcel.cpp, there is a possible way to corrupt memory due to a use after free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

Record
ASB-A-203847542
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
platform/frameworks/native
Android
11:0 up to 11:2022-01-01, plus listed versions
11
11:2022-01-01
platform/frameworks/native
Android
12:0 up to 12:2022-01-01, plus listed versions
12
12:2022-01-01

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-39620 is a high vulnerability (CVSS 7.8) in Google Android, published January 1, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.12%, the 1st percentile. Fixed in platform/frameworks/native 11:2022-01-01.

References

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